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Installer’s Information Manual
Figure 26. Side Filter Cabinet.
Figure 27. Floor Cutout Dimensions.
SECTION 14. CHECKS BEFORE
STARTING FURNACE
Before starting furnace for the first time, be sure you can
answer "Yes" to each of these questions:
1. Is furnace properly equipped to operate with available
fuel?
2. Is furnace level?
3. Have you cleared away all loose construction and
insulation materials?
4. Is furnace installed with proper clearances to
combustible materials?
5. If furnace is in crawl space, is it sufficiently elevated
above the ground?
6. Does furnace have sufficient combustion and
ventilation air?
7. Does vent system meet current National Fuel Gas
Code ANSI Z223.1/NFPA 54 and/or CAN/CGA B149
Installation Codes and local codes?
8. Is vent connector securely fastened to vent collar?
9. Did you completely check gas pipe and controls for gas
leaks?
10. Does electrical wiring follow current National Electrical
Code ANSI/NFPA 70 or Canadian Electrical Code CSA
C22.1 as well as local codes?
11. Is furnace electrically grounded?
12. Is room thermostat properly installed and heat
anticipator set correctly?
13. Is duct system correctly sized and sealed?
14. Are proper air filter frames or filter supports installed?
15. Are air filters in place and correctly sized?
16. On furnace installations above a 2,000-foot elevation,
is furnace derated properly?
SECTION 15. GAS SUPPLY
PRESSURE ADJUSTMENT
You will need a 0 to 15 inch water manometer with 0.1 inch
resolution and a 1/8" NPT manual shut-off valve to measure
actual gas pressure.
WARNING
: You must have correct gas supply and
pressure for proper burner operation. Failure to accurately
adjust pressure could cause a fire or explosion.